On the distribution of propaguliferous species of Pohlia (Bryaceae, Musci) in Russia
1999; KMK Scientific Press Ltd.; Volume: 8; Issue: 1 Linguagem: Inglês
10.15298/arctoa.08.06
ISSN2782-201X
Autores Tópico(s)Peatlands and Wetlands Ecology
ResumoThe genus Pohlia (Bryaceae) includes ca.110 species distributed all over the world but predominantly in the temperate and northern latitudes.Twenty-eight species are recognized for Russia at present.Among them there is a group of nine dioicous species in the section Pohliella producing propagula in the leaf axils of sterile gametophyte.Species of this group are very alike in general habit, leaves and laminal cells shape and size, exostome and endostome morphology, etc.This notable uniformity probably indicates close phylogenetic relationships and monophyletic origin.The species are distinguished mainly by differences in size, shape, number of propagulae and degree of their differentiation.During the recent years the taxonomy of propaguliferous species of Pohlia has undergone the essential changes (Arts, 1990;Lewis & Smith, 1978; Shaw, 1981a Shaw, ,b, 1982;;Wilczek, Demaret, 1970).Thus the necessity of a revision of material collected in Russia has arisen.The author has studied herbarium specimens from KPABG, KRAS, KWHA, LE, LW, LWS, MHA, MSK, SASY, SYKO, VLA.The result of taxonomic study was published by the author earlier (Czernyadjeva, 1997).The purpose of this paper is to map species distribution in Russia and adjacent regions.
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